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Search for fish species by common or scientific name, or use filters to browse by water type, size, temperament, and difficulty.
Found 654 species
Bunguran rasbora
Rasbora bunguranensis
Rasbora bunguranensis is a small, schooling Rasbora from Indonesia's Natuna Besar (Bunguran) Island. It stays pretty modest in size (about 8 cm standard length), so it fits that classic Rasbora vibe: active midwater cruising and happiest when you keep a proper group so they feel confident.
Butterfly stingaree
Urolophus papilio
This is a deepwater little stingray from the Chesterfield Islands area (Coral Sea), with a super wide, diamond-shaped disc that earned it the butterfly name. It is a bathydemersal species recorded around 330 m deep, so its needs are basically the opposite of a normal home aquarium ray - cold, high pressure habitat, and not something the hobby can realistically support.
Cahita sucker
Catostomus cahita
A river sucker from northwestern Mexico, it spends its days rooting through gravel for insect larvae and algae and hanging out in steady current. Not flashy, but it is a sturdy, torpedo-shaped fish with a neat downturned mouth and lots of personality once it settles in. It gets too big for most tanks and really appreciates cool, clean, well-oxygenated water.
Cahual tridentine catfish
Tridentopsis cahuali
Tridentopsis cahuali is one of those truly tiny South American pencil catfishes - think around 2 cm, basically a living sliver. It is from the Paraguay River basin, and its whole vibe is secretive micro-catfish life in warm freshwater. Real talk: there is very little hobby-grade care info out there, so I would treat it like a delicate specialty fish and plan on a species tank and careful observation.
Calabazas shiner
Aztecula calabazas
Aztecula calabazas is a tiny Mexican shiner/minnow from the Rio Panuco basin, basically a little stream fish that spends its whole life in a very small area. Its big claim to fame is how localized and rare it is - this is one of those species thats more of a conservation fish than a normal aquarium fish you see for sale.
Cameroon goby
Wheelerigobius wirtzi
This is a tiny little marine goby from the Gulf of Guinea that hangs out shallow on rocky faces. Its whole vibe is "small, shy, and clingy to cover," so it does best when you give it lots of rockwork and calm tankmates. Not something you see in shops often, but its micro-goby size and habitat style make it a really interesting oddball.
Canarytop wrasse
Halichoeres leucoxanthus
Bright yellow up top with a clean white belly, this wrasse has that lemon-meringue vibe, and mature males show slick violet lines on the face. It sleeps buried in the sand and spends the day cruising the rockwork picking off tiny pests - super active but easygoing. Give it a secure lid because they can launch when startled.
Candy Hogfish
Bodianus bimaculatus
Think of this little hog as a bright-yellow torpedo with pink-red candy stripes and two telltale black dots. It zips around the rockwork all day, nosing and even blowing into crevices for snacks, and it stays small enough to fit a modest reef as long as you plan around tiny shrimp.
Candystick goby
Vanderhorstia delagoae
This is a shrimp-associated sand goby from the western Indian Ocean and Red Sea area, and it spends its life hovering right by a burrow (usually shared with a snapping shrimp). In a tank it is all about a fine sand bed and feeling secure - when its setup is right, you get that cool watchman-style behavior and constant "standing guard" at the entrance.
Cantor's croaker
Johnius cantori
Johnius cantori is a tiny little tropical croaker from the eastern Indian Ocean, and its whole claim to fame is how obscure it is - FishBase lists it as known only from the holotype collected in Malaysia. Like other croakers, it lives near the bottom in coastal waters, making it unlikely to be found in aquarium trade.
Caohai stone loach
Eonemachilus caohaiensis
This is a tiny Chinese stone loach from high-elevation Caohai Lake in Guizhou, and it is basically a bottom-hugging little noodle that wants clean, well-oxygenated water. It is not something you will see in the trade much, but if you ever did, I would treat it like other small cool-water nemacheilid loaches: lots of cover, smooth sand, and steady filtration.
Cape Fear shiner
Notropis mekistocholas
This is a tiny, super-local North Carolina shiner from the Cape Fear River basin, and it has a weirdly long, coiled gut for a shiner because it can make a living on a lot of plant-y, detritus-type foods. In the wild it hangs around rocky and sandy pools and runs and often schools up with other minnows, plus it shifts into slower pools to spawn in late spring into summer.